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The generation of specific responses to stretch, pain or visceral sensations. Majoros Myrtill.

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Presentation on theme: "The generation of specific responses to stretch, pain or visceral sensations. Majoros Myrtill."— Presentation transcript:

1 The generation of specific responses to stretch, pain or visceral sensations.
Majoros Myrtill

2 The stretch reflex The reflex arc of the stretch reflex
Stimulus : stretching of the muscle Receptor : muscle spindle, intrafusal muscle fibers, nuclear bag and nuclear chain receptors Afferent path : Ia and II type nerve fibers of sensory ganglion cells Center : spinal cord, ventral horn, somatomotor neurons (alpha type) Efferent path : axons of alpha motorneurons Effector structure : extrafusal muscle fibers of the muscle Compensatory action : shortening of the muscle

3 Withdrawal reflex

4 Visceral reflex The reflex arc of visceral reflexes
Stimulus : change in pressure Receptor : baroreceptor, mechanoreceptor, chemoreceptor, heat receptor Afferent path : processes of pseudounipolar cells of spinal ganglia Center : spinal cord, brain stem Efferent path : preganglionic neurons projecting to the peripheral autonomic ganglion Processes of visceral ganglion cells projecting to the organs Effector structure : cardiac and smooth muscle

5 References http://neuroscience.uth.tmc.edu/s3/chapter02.html
meaning.html

6 Thank you for your attention!


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